Study on electrochemiluminescence spectra of ZnO flakes

The electrochemiluminescence spectra of ZnO were recorded to investigate the surface states of the samples prepared from hydrothermal synthesis and electrochemical deposition, respectively. Photoluminescence spectra and electrochemiluminescence-potential curves were applied to study the effect of the preparation procedure and particle sizes on the surface electronic structure of products. The results indicated that the preparation conditions and the particle sizes have a small influence on the surface band gap.